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Abstract

The genus Glyphicnemis Förster, 1869 is newly recorded from the Oriental Region based on a new species, Glyphicnemisganica Sheng & Li, sp. n., collected from Jiangxi Province, in the oriental part of China. This species resembles G.watanabei (Uchida, 1930) from Japan in the coloration of flagellum and the structure and colouration of metasomal tergites, but it can be distinguished by the density and length of clypeal setae, the large propodeal spiracle, and the sculpture of area superomedia. Illustrations of G.ganica and G.watanabei are provided. A key to the Asian species of this genus is also given.

Keywords

Glyphicnemis, key, new species, Phygadeuontini, taxonomy

Introduction

Glyphicnemis Förster, 1869, belonging to the tribe Phygadeuontini of the subfamily Cryptinae (Hymenoptera: Ichneumonidae), comprises 12 species (Yu et al. 2016), of which six are from the Eastern Palaearctic Region (Ghahari and Jussila 2014, Jonaitis 1981, Uchida 1930, 1952) (three of them are found across the Palaearctic), five from the Western Palaearctic Region (Ciochia 1973, Jonaitis 1981, Sawoniewicz 1985, Schwarz and Shaw 2010, Yu et al. 2016) and four from the Nearctic Region (Luhman 1986). One species of Glyphicnemis Förster was known from China (Uchida 1930). The diagnostic characters of the genus were most recently revised by Townes (1970).

Jonaitis (1981) provided a key to the species of the European part of USSR. Sawoniewicz (1985) revised the European species of the subtribe Endaseina with keys to the genera and the species of Glyphicnemis. Most Eastern Palaearctic species were described by Uchida (1930, 1952, 1955). A single species, G.satoi (Uchida, 1930), is previously recorded from Heilongjiang Province, Northeastern China.

In this article a new species of Glyphicnemis from Jiangxi, China, is described. This species is the first record of this genus from the Oriental Region.

Description

Head. With dense large punctures. Face 2.8 × as wide as long, strongly convex. Clypeus 4.0 × as wide as long (Fig. 2); basal portion with transverse rugae; subapical portion strongly convex, forming a transverse ridge. Basal portion of mandibles with longitudinal rugae and fine punctures; lower tooth 3.7 × as long as upper tooth. Eye particularly small, with sparse short hairs. Malar space 0.4 × as long as basal width of mandible. Gena in lateral view 1.4 × as long as width of eye, with punctures larger than those of face. Vertex (Fig. 3) with dense uneven puctures. Postocellar line 1.2 × as long as ocular-ocellar line. Antenna (Fig. 4) short, with 19 flagellomeres. Second flagellomere 1.25 × as long as maximum width. Ratio of length from first to fifth flagellomeres: 1.4:1.0:0.9:0.8:0.7. Occipital carina complete.

Metasoma. Tergites smooth, shiny. First tergite 1.7 × as long as posterior width, median dorsal carinae reaching about 0.6 of first tergite; posterolateral parts with sparse fine punctures. Dorsolateral and ventrolateral carinae complete. Spiracle circular, small, located at posterior 0.3 of first tergite. Second tergite 0.56 × as long as its posterior width, with a few indistinct fine punctures. Third tergite 0.7 × as long as its posterior width, 0.8 × as long as its posterior width. Fourth and subsequent tergites with short brown pubescence. Ovipositor sheath 0.9 × as long as hind tibia.

Remarks

This new species is similar to G.watanabei (Uchida, 1930) but can be distinguished from the latter by the following combination of characters: apical margin of clypeus without unusual long hairs (vs. with dense, long hairs; see Fig. 12). Area superomedia with strong irregular transverse rugae, costula connecting at its posterior 0.3 (vs. smooth, shiny, without rugae, costula connecting slightly beyond its middle; see Fig. 13). Ovipositor sheath 0.9 × as long as hind tibia (vs. 0.75). Clypeus entirely reddish brown (vs. basally black, apically brown). First tergite dark brown (vs. black). All coxae and hind femur yellow brown (vs. black). It can also be distinguished from the known species of the Oriental and Eastern Palaearctic Regions by the preceding key.

Gauld ID (1991) The Ichneumonidae of Costa Rica, 1. Introduction, keys to subfamilies, and keys to the species of the lower Pimpliform subfamilies Rhyssinae, Poemeniinae, Acaenitinae and Cylloceriinae. Memoirs of the American Entomological Institute 47: 1–589.

Ghahari H, Jussila R (2014) A faunistic study on the Ichneumonidae (Hymenoptera: Ichneumonoidea) from the west of Iran. Linzer biologische Beiträge 46(2): 1373–1377.

Jonaitis VP (1981) A guide to the insects of the European part of the USSR. Hymenoptera, Ichneumonidae. Subfam. Gelinae (Cryptinae). Opredeliteli Faune SSSR 129: 175–274. [In Russian]